Unit 5, Lesson 17
Multiply Decimals and Whole Numbers
Grade 5
Preparation
Lesson Narrative
In previous lessons students made sense of decimals to the thousandth and added and subtracted decimals to the hundredth. The goal of this lesson is for students to multiply decimals to the hundredth in a way that makes sense to them. They apply their work with decimal place value and multiplication of whole numbers. Students may draw pictures (hundredths grids or tape diagrams) or reason using place value or properties of operations (distributive and associative). As with addition and subtraction of decimals, students see that for multiplication, they can use what they know about whole number multiplication as long as they pay close attention to place value.
- Action and Expression
None
- Describe (orally and using other representations) strategies for multiplying a 1-digit whole number and a decimal number with 1 non-zero digit.
- Let’s multiply whole numbers by tenths and hundredths.
Required Preparation
None
Teacher Reflection Questions
If you were to teach this lesson again what would you do the same? What would you change?